Lighter roasts will contain slightly more and darker roasts, slightly less. But, all coffee pods will vary in caffeine so 130 mg and/or 260 mg is the average amount to expect.

How Many Shots?

The caffeine amounts of the espresso-based drinks show that a Tall Latte (and Cappuccino) has just a single shot of coffee. For a 12 oz cup size – this is quite weak and has considerably less caffeine than a brewed coffee of the same size.

Most conscientious coffee vendors serve at least a double-shot in drinks over 8 ounces. Most provide double-shots (by default) in regular takeaway cups. This is because many takeaway cups tend to have more volume than their china or crockery counterparts.

Tazo Replaced by Teavana

Starbucks has begun phasing out Tazo Tea and replacing it with Teavana after they acquired the brand last year. We’ve removed Tazo from our table above, but here they are for your reference.

Beverage

Short
(8 floz)

Tall(12 floz)

Grande(16 floz)

Venti(20 floz)

Tazo Black Tea Latte

50mg

75mg

100mg

125mg

Tazo Chai Tea Latte

50mg

75mg

100mg

120mg

Tazo Green Tea Latte

30mg

55mg

80mg

110mg

Chocolate Chai Tea Latte

10mg

10mg

20mg

25mg

Tazo Awake Brewed Tea

70mg

70mg

70mg

140mg

Tazo Calm Brewed Tea

0mg

0mg

0mg

0mg

Vanilla Rooibos Tea Latte

0mg

0mg

0mg

0mg

Full Leaf Chai Tea

40mg

40mg

40mg

40mg

Awake Tea Latte

70mg

70mg

70mg

140mg

Passion Brewed Tea

0mg

0mg

0mg

0mg

Zen Brewed Tea

30mg

30mg

30mg

65mg

Refresh Brewed Tea

0mg

0mg

0mg

0mg

Earl Grey Latte

65mg

65mg

65mg

130mg

Tazo China Green Tips Tea

45mg

45mg

45mg

85mg

Tazo Earl Grey Brewed Tea

65mg

65mg

65mg

130mg

Iced Chocolate Chai Latte

–

10mg

10mg

20mg

Iced Green Tea Latte

–

50mg

80mg

110mg

Iced Chai Latte

–

70mg

95mg

145mg

Iced Awake Tea Latte

–

50mg

50mg

100mg

Tazo Chai Frapp

20mg

40mg

45mg

Tazo Green Tea Frapp

–

50mg

70mg

100mg

How Accurate Are These Amounts?

Starbucks makes it clear that “caffeine information is approximate and is based on limited analytical data.” and also that “Values can vary greatly based on the variety of the coffee and the brewing equipment used.”

Here are a few independent tests that showed some discrepancies from what Starbucks lists.

A recent test conducted by BuzzFeed found Starbucks Brewed Coffee to average about 17 mg/ounce or 272 mg per 16 fluid ounces (Grande). This is about 60 mg less than what Starbucks reports.

An interesting example: If you look at the brewed coffee varieties you would think that the blends that have more caffeine in the Grande size would also have more caffeine in the Short size. This isn’t always the case according to Starbuck’s data, but this would make sense logically.